During this period, hair grows at a rate of about three tenths millimeters a day, or one centimeter a month.

VOA: special.2011.04.05

If you're trying to prevent a disease that only occurs at a rate of 20 per 100,000 people you have to give the vaccine to millions in order to see if the number goes down.

如果你尝试去防治一个,发病概率为十万分之二十人的疾病,那么就必须将疫苗分发给数百万人,以观察疫苗能否降低发病率

耶鲁公开课 - 生物医学工程探索课程节选

At any rate, the reader must regard it as creative writing rather than simply a record of life."

无论从哪一层面来看，把它当作是极具创想的作品,而不单单是生活的记录“

耶鲁公开课 - 1945年后的美国小说课程节选

But it is growing at a rate of fifteen to twenty percent a year.

VOA: special.2009.12.11

That would be a portfolio where you borrowed at the riskless rate and you put more than 100% of your money into the tangency portfolio.

在这种组合里,你可以以无风险利率借贷到一些资金,从而可以投入比你本金更多的资金,来购买切线投资组合。

耶鲁公开课 - 金融市场课程节选

Laboratory marmosets increased weight at a rate of nine percent per ten-year period.

VOA: special.2010.12.21

The CDC can buy this from the manufacturer for a lower price, and when you hear about government organizations distributing vaccines to different parts of the world, they're buying at a reduced rate but it's still not inexpensive.

疾控中心可以从工厂拿到较低价格的疫苗,当你听到,政府组织向世界各地,分发派送疫苗时,他们确实给的是折扣价,但却并不那么廉价

耶鲁公开课 - 生物医学工程探索课程节选

They have bred prolifically and have advanced across Australia's tropics at a rate of 40 to 50 kilometers a year.

VOA: standard.2010.02.07

Of course, if you degrade the messenger RNA at a rapid rate then you'll stop expression of the cells.

如果降解信使RNA的速度很快的话,就会停止细胞的表达

耶鲁公开课 - 生物医学工程探索课程节选

The Bank of Japan agreed to loan $115 billion to financial institutions for three months at a rate of 0.1 percent.

VOA: standard.2009.12.03

However,it was largely the result of businesses cutting their supplies of unsold goods at a slower rate.

VOA: special.2010.01.30

In five of them, the rate at which fish are being taken out of the sea has dropped to a level that should let the populations recover.

VOA: special.2009.09.08

"On a scale of ten, I would rate it at eight."

VOA: special.2010.06.14

The U.S.economy grew at a faster than expected rate at the end of 2009, up nearly six percent in the last three months of the year.

VOA: standard.2010.03.02